<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
    <style type="text/css">
        body, html {width: 100%;height: 100%;margin:0;font-family:"微软雅黑";}
        #allmap{width:100%;height:500px;}
        #r-result{width:100%;margin-top:5px;}
        p{margin:5px; font-size:14px;}
    </style>
    <!--<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=您的密钥"></script>-->
    <script src="http://api.map.baidu.com/api?v=2.0&ak=bXD2LO0j2HgnWVZMXx2g5FeExhoV8HVD"></script>
    <title>添加/删除工具条、比例尺控件</title>
</head>
<body>
<div id="allmap"></div>
<div id="r-result">
    <input type="button" onclick="add_control();" value="添加" />
    <input type="button" onclick="delete_control();" value="删除" />
</div>
<p>在地图的左上、右上分别展示完整、缩略样式的缩放平移控件；同时在地图的左上方展示比例尺控件，点击按钮查看效果</p>
</body>
</html>
<script type="text/javascript">
    // 百度地图API功能
    var map = new BMap.Map("allmap");
    map.centerAndZoom(new BMap.Point(116.404, 39.915), 11);

    var top_left_control = new BMap.ScaleControl({anchor: BMAP_ANCHOR_TOP_LEFT});// 左上角，添加比例尺
    var top_left_navigation = new BMap.NavigationControl();  //左上角，添加默认缩放平移控件
    var top_right_navigation = new BMap.NavigationControl({anchor: BMAP_ANCHOR_TOP_RIGHT, type: BMAP_NAVIGATION_CONTROL_SMALL}); //右上角，仅包含平移和缩放按钮
    /*缩放控件type有四种类型:
     BMAP_NAVIGATION_CONTROL_SMALL：仅包含平移和缩放按钮；BMAP_NAVIGATION_CONTROL_PAN:仅包含平移按钮；BMAP_NAVIGATION_CONTROL_ZOOM：仅包含缩放按钮*/

    //添加控件和比例尺
    function add_control(){
        map.addControl(top_left_control);
        map.addControl(top_left_navigation);
        map.addControl(top_right_navigation);
    }
    //移除控件和比例尺
    function delete_control(){
        map.removeControl(top_left_control);
        map.removeControl(top_left_navigation);
        map.removeControl(top_right_navigation);
    }
</script>
